Noticed today that huskysat stops sending data and sends only a carrier for about a second then starts back up, saw it do that 4 times last pass. DAC overflows?
73 Kevin wa7fwf
Thanks for reporting this, Kevin. I have not noticed it. Are you able to decode signals from HuskySat with FoxTelem? If so, I wonder where this happens. Do you miss a frame (if you are getting every frame, they should be about every 5 seconds). Are you mainly noticing it by audio (in which case it might be a bunch of zeros in a row). There is one point where I send 1/0/1/0/1/0 which would explain this, but that should only happen when it shifts modes, and I don;t think that has happened.
Any more info would be useful and interesting.
Burns WB1FJ Fox/Husky Software
On Sat, Feb 8, 2020 at 3:20 PM Kevin via AMSAT-BB amsat-bb@amsat.org wrote:
Noticed today that huskysat stops sending data and sends only a carrier for about a second then starts back up, saw it do that 4 times last pass. DAC overflows?
73 Kevin wa7fwf _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
I’ve heard what Kevin reported. It’s very distinctive. I will pay attention next time but if you asked I would say that the decoder loses sync and misses the next frame or two
B
On Sat, Feb 8, 2020 at 6:51 PM Burns Fisher via AMSAT-BB amsat-bb@amsat.org wrote:
Thanks for reporting this, Kevin. I have not noticed it. Are you able to decode signals from HuskySat with FoxTelem? If so, I wonder where this happens. Do you miss a frame (if you are getting every frame, they should be about every 5 seconds). Are you mainly noticing it by audio (in which case it might be a bunch of zeros in a row). There is one point where I send 1/0/1/0/1/0 which would explain this, but that should only happen when it shifts modes, and I don;t think that has happened.
Any more info would be useful and interesting.
Burns WB1FJ Fox/Husky Software
On Sat, Feb 8, 2020 at 3:20 PM Kevin via AMSAT-BB amsat-bb@amsat.org wrote:
Noticed today that huskysat stops sending data and sends only a carrier for about a second then starts back up, saw it do that 4 times last pass. DAC overflows?
73 Kevin wa7fwf _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions
expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
I have seen the phenomenon as described by Bob on every pass I have actually watched. (most download unattended)
Ed K9EK EL98av
On February 8, 2020 at 7:04 PM Bob via AMSAT-BB amsat-bb@amsat.org wrote:
I’ve heard what Kevin reported. It’s very distinctive. I will pay attention next time but if you asked I would say that the decoder loses sync and misses the next frame or two
B
On Sat, Feb 8, 2020 at 6:51 PM Burns Fisher via AMSAT-BB amsat-bb@amsat.org wrote:
Thanks for reporting this, Kevin. I have not noticed it. Are you able to decode signals from HuskySat with FoxTelem? If so, I wonder where this happens. Do you miss a frame (if you are getting every frame, they should be about every 5 seconds). Are you mainly noticing it by audio (in which case it might be a bunch of zeros in a row). There is one point where I send 1/0/1/0/1/0 which would explain this, but that should only happen when it shifts modes, and I don;t think that has happened.
Any more info would be useful and interesting.
Burns WB1FJ Fox/Husky Software
On Sat, Feb 8, 2020 at 3:20 PM Kevin via AMSAT-BB amsat-bb@amsat.org wrote:
Noticed today that huskysat stops sending data and sends only a carrier for about a second then starts back up, saw it do that 4 times last pass. DAC overflows?
73 Kevin wa7fwf _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions
expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
Ok, I think we get what is happening. This is showing it switching modes. Chances are UW changed its mode to get more science data when it went over them. That timed out while you were listening and when it switches mode, the buffers are cleared out and we start with a little sync bit pattern. What is curious is that the mode shows a change in the Whole Orbit Data, but it is not being displayed in the realtime data.
Thanks to everyone for bringing this up!
73,
Burns WB1FJ
On Sat, Feb 8, 2020 at 9:27 PM EDWARD KROME e.krome@comcast.net wrote:
I have seen the phenomenon as described by Bob on every pass I have actually watched. (most download unattended)
Ed K9EK EL98av
On February 8, 2020 at 7:04 PM Bob via AMSAT-BB amsat-bb@amsat.org
wrote:
I’ve heard what Kevin reported. It’s very distinctive. I will pay attention next time but if you asked I would say that the decoder loses sync and misses the next frame or two
B
On Sat, Feb 8, 2020 at 6:51 PM Burns Fisher via AMSAT-BB <
amsat-bb@amsat.org>
wrote:
Thanks for reporting this, Kevin. I have not noticed it. Are you
able to
decode signals from HuskySat with FoxTelem? If so, I wonder where this happens. Do you miss a frame (if you are getting every frame, they
should
be about every 5 seconds). Are you mainly noticing it by audio (in
which
case it might be a bunch of zeros in a row). There is one point where
I
send 1/0/1/0/1/0 which would explain this, but that should only happen
when
it shifts modes, and I don;t think that has happened.
Any more info would be useful and interesting.
Burns WB1FJ Fox/Husky Software
On Sat, Feb 8, 2020 at 3:20 PM Kevin via AMSAT-BB amsat-bb@amsat.org wrote:
Noticed today that huskysat stops sending data and sends only a
carrier
for about a second then starts back up, saw it do that 4 times last
pass.
DAC overflows?
73 Kevin wa7fwf _______________________________________________ Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum
available
to all interested persons worldwide without requiring membership.
Opinions
expressed are solely those of the author, and do not reflect the official
views of
AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings:
https://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions
expressed are solely those of the author, and do not reflect the official views
of
AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
Sent via AMSAT-BB@amsat.org. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership.
Opinions expressed
are solely those of the author, and do not reflect the official views of
AMSAT-NA.
Not an AMSAT-NA member? Join now to support the amateur satellite
program!
Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
Yes decoding and there is a gap in the decoding when this happens, I see dac overflows increasing but do not see resets in the telem but I could be missing something. it's long enough that it is clearly visible on a sdr display, like I said its about a sec or two in length.
WA7EE sent me a mov that captured what the sat is doing, here is a dropbox link for viewing Thanks to Mariana for capturing it.
https://www.dropbox.com/s/ej22tqai04be4oe/huskysat.MOV?dl=0
Kevin wa7fwf
On 2/8/2020 15:48, Burns Fisher wrote:
Thanks for reporting this, Kevin. I have not noticed it. Are you able to decode signals from HuskySat with FoxTelem? If so, I wonder where this happens. Do you miss a frame (if you are getting every frame, they should be about every 5 seconds). Are you mainly noticing it by audio (in which case it might be a bunch of zeros in a row). There is one point where I send 1/0/1/0/1/0 which would explain this, but that should only happen when it shifts modes, and I don;t think that has happened.
Any more info would be useful and interesting.
Burns WB1FJ Fox/Husky Software
On Sat, Feb 8, 2020 at 3:20 PM Kevin via AMSAT-BB <amsat-bb@amsat.org mailto:amsat-bb@amsat.org> wrote:
Noticed today that huskysat stops sending data and sends only a carrier for about a second then starts back up, saw it do that 4 times last pass. DAC overflows? 73 Kevin wa7fwf _______________________________________________ Sent via AMSAT-BB@amsat.org <mailto:AMSAT-BB@amsat.org>. AMSAT-NA makes this open forum available to all interested persons worldwide without requiring membership. Opinions expressed are solely those of the author, and do not reflect the official views of AMSAT-NA. Not an AMSAT-NA member? Join now to support the amateur satellite program! Subscription settings: https://www.amsat.org/mailman/listinfo/amsat-bb
participants (4)
-
Bob -
Burns Fisher -
EDWARD KROME -
Kevin